The development of tea blister caused by Exobasidium vexans in tea (Camellia sinensis) correlates with the reduced accumulation of some antimicrobial metabolites and the defence signals salicylic and jasmonic acids

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@article{010842b147ac4bdf91db5015693f37ce,
title = "The development of tea blister caused by Exobasidium vexans in tea (Camellia sinensis) correlates with the reduced accumulation of some antimicrobial metabolites and the defence signals salicylic and jasmonic acids",
abstract = "Blister blight (causal agent, Exobasidium vexans) is an economically devastating disease of tea (Camellia sinensis). To determine what metabolite changes occur with tea blister that could be linked to disease progression, metabolomic approaches were used on E. vexans infected tea from a Darjeeling (India) plantation. Samples were classified according to disease phenotypes, i.e. either healthy or at one of three stages of disease progression. Initial metabolite fingerprinting using Fourier transform infrared (FTIR) spectroscopy indicated that metabolite changes could be related to disease stage. Electrospray ionization mass spectrometry (ESI-MS) highlighted caffeine and flavonoid metabolism changes as disease progressed. High-performance liquid chromatography (HPLC) with online photodiode array detection and electrospray ionization-tandem mass spectrometry (HPLC-PDA-ESI/MSn) was used to characterize the caffeine, flavan-3-ol, flavone and flavonol profiles. There were increases in quercetin and kaempferol glucosides, kaempferol triglycosides and some catechin-class antioxidants, but also substantial reductions in apigenin and myricetin glycosides and, particularly, caffeine as disease progressed. The content of important defence hormones, salicylic acid and jasmonic acid, was also reduced in blister blight diseased samples. Thus, E. vexans infections perturb defence signalling and reduce many potentially antimicrobial compounds, such as caffeine, to aid disease progression.",
keywords = "caffeine, catechins, flavonoids, tea blister disease",
author = "Luis Mur and Barbara Hauck and Ana Winters and Heald, {James Kevin} and Lloyd, {Amanda Jane} and U. Chakraborty and Chakraborty, {B. N.}",
note = "{"}This is the peer reviewed version of the following article: Mur, L., Hauck, B., Winters, A., Heald, J. K., Lloyd, A. J., Chakraborty, U., & Chakraborty, B. N. (2015). The development of tea blister caused by Exobasidium vexans in tea (Camellia sinensis) correlates with the reduced accumulation of some antimicrobial metabolites and the defence signals salicylic and jasmonic acids. Plant Pathology., which has been published in final form at http://dx.doi.org/doi:10.1111/ppa.12364. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.{"}",
year = "2015",
month = dec,
doi = "10.1111/ppa.12364",
language = "English",
volume = "64",
pages = "1471--1483",
journal = "Plant Pathology",
issn = "0032-0862",
publisher = "Wiley",
number = "6",

}

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TY - JOUR

T1 - The development of tea blister caused by Exobasidium vexans in tea (Camellia sinensis) correlates with the reduced accumulation of some antimicrobial metabolites and the defence signals salicylic and jasmonic acids

AU - Mur, Luis

AU - Hauck, Barbara

AU - Winters, Ana

AU - Heald, James Kevin

AU - Lloyd, Amanda Jane

AU - Chakraborty, U.

AU - Chakraborty, B. N.

N1 - "This is the peer reviewed version of the following article: Mur, L., Hauck, B., Winters, A., Heald, J. K., Lloyd, A. J., Chakraborty, U., & Chakraborty, B. N. (2015). The development of tea blister caused by Exobasidium vexans in tea (Camellia sinensis) correlates with the reduced accumulation of some antimicrobial metabolites and the defence signals salicylic and jasmonic acids. Plant Pathology., which has been published in final form at http://dx.doi.org/doi:10.1111/ppa.12364. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving."

PY - 2015/12

Y1 - 2015/12

N2 - Blister blight (causal agent, Exobasidium vexans) is an economically devastating disease of tea (Camellia sinensis). To determine what metabolite changes occur with tea blister that could be linked to disease progression, metabolomic approaches were used on E. vexans infected tea from a Darjeeling (India) plantation. Samples were classified according to disease phenotypes, i.e. either healthy or at one of three stages of disease progression. Initial metabolite fingerprinting using Fourier transform infrared (FTIR) spectroscopy indicated that metabolite changes could be related to disease stage. Electrospray ionization mass spectrometry (ESI-MS) highlighted caffeine and flavonoid metabolism changes as disease progressed. High-performance liquid chromatography (HPLC) with online photodiode array detection and electrospray ionization-tandem mass spectrometry (HPLC-PDA-ESI/MSn) was used to characterize the caffeine, flavan-3-ol, flavone and flavonol profiles. There were increases in quercetin and kaempferol glucosides, kaempferol triglycosides and some catechin-class antioxidants, but also substantial reductions in apigenin and myricetin glycosides and, particularly, caffeine as disease progressed. The content of important defence hormones, salicylic acid and jasmonic acid, was also reduced in blister blight diseased samples. Thus, E. vexans infections perturb defence signalling and reduce many potentially antimicrobial compounds, such as caffeine, to aid disease progression.

AB - Blister blight (causal agent, Exobasidium vexans) is an economically devastating disease of tea (Camellia sinensis). To determine what metabolite changes occur with tea blister that could be linked to disease progression, metabolomic approaches were used on E. vexans infected tea from a Darjeeling (India) plantation. Samples were classified according to disease phenotypes, i.e. either healthy or at one of three stages of disease progression. Initial metabolite fingerprinting using Fourier transform infrared (FTIR) spectroscopy indicated that metabolite changes could be related to disease stage. Electrospray ionization mass spectrometry (ESI-MS) highlighted caffeine and flavonoid metabolism changes as disease progressed. High-performance liquid chromatography (HPLC) with online photodiode array detection and electrospray ionization-tandem mass spectrometry (HPLC-PDA-ESI/MSn) was used to characterize the caffeine, flavan-3-ol, flavone and flavonol profiles. There were increases in quercetin and kaempferol glucosides, kaempferol triglycosides and some catechin-class antioxidants, but also substantial reductions in apigenin and myricetin glycosides and, particularly, caffeine as disease progressed. The content of important defence hormones, salicylic acid and jasmonic acid, was also reduced in blister blight diseased samples. Thus, E. vexans infections perturb defence signalling and reduce many potentially antimicrobial compounds, such as caffeine, to aid disease progression.

KW - caffeine

KW - catechins

KW - flavonoids

KW - tea blister disease

UR - http://hdl.handle.net/2160/42704

U2 - 10.1111/ppa.12364

DO - 10.1111/ppa.12364

M3 - Article

VL - 64

SP - 1471

EP - 1483

JO - Plant Pathology

JF - Plant Pathology

SN - 0032-0862

IS - 6

ER -

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